CN103165039B - High-contrast light-emitting diode (LED) display module and production method thereof - Google Patents
High-contrast light-emitting diode (LED) display module and production method thereof Download PDFInfo
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- CN103165039B CN103165039B CN201310113388.1A CN201310113388A CN103165039B CN 103165039 B CN103165039 B CN 103165039B CN 201310113388 A CN201310113388 A CN 201310113388A CN 103165039 B CN103165039 B CN 103165039B
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Abstract
The invention discloses a production method of a high-contrast light-emitting diode (LED) display module. The production method includes the following steps: (1) producing an LED support provided with at least one LED support unit, (2) packaging the LED support and forming an LED device, (3) installing the LED device in a module body, wherein step (4) is also included after the three steps, and (4) a black material is sprayed on at least part of the side of the LED support unit. Due to the fact that the black material is sprayed on at least part of the side of the LED support unit by means of the spraying process, production efficiency is high, homogeneity of products is good, and the obtained contrast of the display module is better. The invention further discloses a high-contrast LED display module.
Description
Technical field
The present invention relates to the manufacture method that a kind of LED shows module, particularly relate to manufacture method and obtained high-contrast LED display module that a kind of high-contrast LED shows module.
Background technology
LED is as a kind of novel energy-conserving and environment-protective light source, and its application out of doors on display screen is deeply by the close attention of people.Contrast is one of important indicator weighing LED display image displaying quality.Contrast refers generally to LED display and shows the brightness of white picture and the ratio of the black picture brightness of display.Improve the contrast of LED display, can improve the display effect of LED display, therefore, people are devoted to the contrast improving LED display always.
In order to improve the contrast of LED outdoor display screen, existing technology mainly contains:
One, LED component design aspect, generally LED support reflector upper surface is designed to black, in order to achieve this end, the usual black material that adopts is made reflector as the reflector of LED support or the outer black words spoken by an actor from offstage two layers of plastic of employing or is adopted the technological means such as the surperficial directly brush tusche of reflector.Wherein, adopt black material to make the manufacture craft of reflector as the reflector of LED support and outer black words spoken by an actor from offstage two layers of plastic, its manufacture craft is loaded down with trivial details, and cost is high, and production efficiency is low; And the method for brush tusche can not apply the side of device.Generally speaking, these existing technological means, complex manufacturing technology, production efficiency is low, cost is high, and the LED component of these method manufactures is assembled into LED when showing module, because the side of reflector and device and mounting points may be white, therefore be difficult to ensure that the contrast of each point of display screen is consistent, make the display effect of display screen not good;
Two, design of LED aspect, fills with when being typically employed in making display screen module and has translucent black glue, for improving the contrast of display screen between circuit board and shell; Or at the associated components of display screen, as pcb board, spray oil layer of ink or light-absorption layer is set, to increase the contrast of display screen in face shield or printed board.Although the existing method that these improve display screen contrast can improve the contrast of display screen to a certain extent, but because these methods all can not make the contrast at the side of LED component in display screen and bright dipping position consistent with the contrast at other positions, namely the contrast of each point of display screen is inconsistent, causes the display effect of display screen not good.In addition, this production technology of spray black ink on face shield, its stability is relatively poor, and face shield spraying coating process be difficult to ensure highly consistent.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the object of the invention is to, providing a kind of high-contrast LED to show the manufacture method of module, Simplified flowsheet and contrast of each point of obtained LED display is consistent and contrast is high, display effect is good.Based on this, the present invention also provides a kind of high-contrast LED to show module, is obtained by previous building methods.
For solving above technical matters, technical scheme of the present invention is:
High-contrast LED shows a manufacture method for module, comprises the steps:
1) LED support with at least one LED support unit is made;
2) then encapsulate described LED support and form LED component;
3) again LED component is arranged in module main body;
In step 1) or step 2) or step 3) complete after also comprise step 4), at least at the surface spray black material of LED support unit.
Preferably, the LED support made in step 1) has multiple LED support unit, and each LED support unit has reflector and adjacent LED support unit is connected by bonding jumper.
Preferably, step 2) be specially: in the reflector of LED support unit, LED chip is installed, and applies packing colloid, form described LED component.
Preferably, step 3) is specially: LED component be arranged on the circuit board of module main body, is filled with waterproof black glue between adjacent LED device.
Preferably, after step 4) is arranged on step 1), step 4) is specially: spray black material on the reflector upper surface and surface of LED support unit; Or spray black material on the reflector upper surface and whole side of LED support unit; Or only spray black material on the part or all of side of LED support unit reflector.
Preferably, step 4) is arranged on step 2) after, step 4) is specially: spray black material on the reflector upper surface and surface of LED support unit; Or spray black material on the reflector upper surface and whole side of LED support unit; Or only spray black material on the part or all of side of LED support unit reflector; Or the upper surface spray black material of the packing colloid of spray black material simultaneously in reflector on the part or all of side of LED support unit reflector; Or the upper surface of packing colloid on the part or all of side of LED support unit reflector while of spray black material in reflector and the upper surface spray black material of reflector.
Preferably, the thickness being sprayed on the black material on packing colloid is 8 μm ~ 12 μm.
Preferably, after step 4) is arranged on step 3), step 4) is specially: be exposed to the reflector side spray black material outside waterproof black glue in LED component; Or the upper surface spray black material of reflector side outside waterproof black glue and waterproof black glue is exposed in LED component; Or be exposed to the upper surface spray black material of reflector side outside waterproof black glue and waterproof black glue in LED component, simultaneously the upper surface spray black material of packing colloid in the upper surface and/or reflector of LED component reflector; Or be exposed to the reflector side outside waterproof black glue and the upper surface spray black material at LED component reflector in LED component.
Preferably, described black material is black ink or black paint.
Preferably, step 4) is specially: before spraying, cover the non-spraying region of LED support unit, then to the region spray black material that need spray.
A kind of high-contrast LED of the present invention shows module, is obtained by aforesaid manufacture method.
Compared with prior art, high-contrast LED of the present invention shows the manufacture method of module, without the need to manufacturing the LED support based on black reflection cup in advance, but adopt the method for spraying, direct display in module manufacture process at LED carries out black material coating at least part of side of LED support unit once, overcome in prior art brush black technique can not the deficiency of coating side face, and production efficiency is higher, good product consistency, the display module contrast obtained is better.Owing to adopting spraying coating process, in the side of original ordinary white reflector, upper surface or packing colloid upper surface direct spraying black material, manufacture the reflector of LED support without the need to adopting price black material costly or adopt black encapsulation colloid, so also greatly reduce cost of products.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that high-contrast LED of the present invention shows the manufacture method embodiment one of module;
Fig. 2 a, Fig. 2 b, Fig. 2 c, Fig. 2 d are the structure formation schematic diagram that high-contrast LED of the present invention shows LED display module in the manufacture method embodiment one of module;
Fig. 3 is that high-contrast LED of the present invention shows in the manufacture method embodiment two of module the structural representation completing the rear LED of black material coating and show module;
Fig. 4 is the schematic flow sheet that high-contrast LED of the present invention shows the manufacture method embodiment three of module;
Fig. 5 a, Fig. 5 b, Fig. 5 c, Fig. 5 d are the structure formation schematic diagram that high-contrast LED of the present invention shows LED display module in each step of manufacture method embodiment three of module;
Fig. 6 is that the LED that the manufacture method coating black material step of high-contrast LED of the present invention display module obtains shows modular structure schematic diagram;
Fig. 7 is the process flow diagram that high-contrast LED of the present invention shows the manufacture method embodiment four of module;
Fig. 8 a, Fig. 8 b, Fig. 8 c, Fig. 8 d are the structure formation schematic diagram that high-contrast LED of the present invention shows LED display module in the manufacture method embodiment four of module.
Embodiment
For making technical scheme of the present invention clearly, below in conjunction with accompanying drawing, by specific embodiment, the present invention is described in detail.
A kind of high-contrast LED provided by the invention shows the manufacture method of module, comprising:
Step one, making LED support: make the LED support with at least one LED support unit; Described LED support unit comprises reflector;
Step 2, packaged LED support: LED chip, coating packing colloid are installed in the reflector of described LED support unit, form LED component;
Step 3, attachment module: described LED component is arranged in module;
Wherein, step 4, coating black material is also comprised: at the whole of LED support unit or regional area spray black material; Described step 4 is implemented or is implemented after completing steps two or implement after completing steps three after completing steps one.
The embodiment of the manufacture method of high-contrast LED provided by the invention display module is set forth further below in conjunction with accompanying drawing.
Embodiment one
See Fig. 1, Fig. 2 a, 2b, 2c, 2d, the manufacture method that the high-contrast LED in the present embodiment shows module comprises the steps:
S1, making LED support: as shown in Figure 2 a, make the LED support with at least one LED support unit 11, adjacent LED support unit 11 is connected by bonding jumper 111; This kind of LED support unit has reflector 12;
S2, packaged LED support: after completing steps S1, as shown in Figure 2 b, install LED chip (sign), coating packing colloid 13, form LED component 1 in the reflector of LED support unit 11;
S3, attachment module: after completing steps S2, LED component is arranged in module main body;
S4, coating black material: after completing steps S3, at the whole of LED support unit or regional area spray black material.
In the present embodiment, the LED support cellular construction of step S1 is preferably PLCC(plastic leaded chip carrier, the plastic chip carrier of band lead-in wire) type TOP LED(top light emitting LED) support.Specifically, as shown in Figure 2 a, LED support unit 11 be by the metal lead wire frame 10 as positive and negative electrode and on metal lead wire frame 10 reflector 12 of plastic packaging form, reflector for carry LED chip and fill packing colloid.
In the present embodiment, step S2 also comprises die-cut LED support, makes LED component 1 depart from bonding jumper 111 and forms at least one independently LED component 1; Module 2 in step S3 comprises driving (not shown), circuit board 21 and be mounted on the LED component 1 of circuit board 21, as shown in Figure 2 c, in this step, after LED component 1 being arranged on the circuit board 21 in module, embedding waterproof black glue 22 between adjacent LED device 1, the reflector surface 121 of LED support unit is exposed to outside waterproof black glue 22;
As shown in Figure 2 d, step S4 adopts spraying method, be exposed to packing colloid 13 upper surface in the reflector side 121 outside waterproof black glue, reflector upper surface 122 and reflector coating black material 3, meanwhile, the upper surface of the waterproof black glue of filling between LED component has also sprayed black material.Black material can be black ink, and can be also black paint or other black materials, the present embodiment uses black paint.In this step, the dosage of black paint is controlled by spraying equipment, packing colloid 13 upper surface in the reflector side 121 of black paint outside waterproof black glue, reflector upper surface 122 and reflector is uniformly distributed, and make the thickness of black paint between 8 μm to 12 μm, the contrast on LED display module surface can be made consistent for such thickness and on packing colloid, the black paint on 13 surfaces does not affect the light-out effect of LED component.In other embodiments, when black material is black ink, the mode that steel mesh can be used to print, at corresponding position coating printing ink, is not limited to the present embodiment.
In the present embodiment, compared to prior art, have the following advantages:
1, the present embodiment is without the need to manufacturing the LED support based on black reflection cup in advance, but employing spraying method, once direct LED show complete LED support in module manufacture process side, upper surface and packing colloid upper surface black material coating, overcome in prior art brush black technique can not the deficiency of coating side face, and production efficiency is higher, good product consistency, display module contrast is better.
2, cost is low: the present embodiment adopts spraying coating process, in the side of original ordinary white reflector, upper surface or packing colloid upper surface direct spraying black material, without the need to manufacturing the reflector of LED support with price black material costly or adopt black encapsulation colloid, greatly reduce cost of products.
Embodiment two
High-contrast LED in the present embodiment shows the manufacture method of module, the difference of itself and embodiment one is: before step S4 is also included in and applies black material, optionally cover the non-coated areas of LED support unit, then cover region coating black material to non-.
In the present embodiment, optionally cover the packing colloid upper surface of LED component, its specific practice is: adopt a mould, mould is provided with the quantity shielding part corresponding with LED component, and the position of shielding part is corresponding with the packing colloid position of each LED component.Each shielding part of mould is close to packing colloid upper surface.Adopt the region coating black material that spraying method is covered not covered portion.After completing this step of coating, obtain the display module of topical application black material, as shown in Figure 3, black material 3 is coated in waterproof black glue 22, the upper surface 122 of reflector and surface 121, the upper surface of packing colloid 13, owing to using mould covered, does not apply black material.
Embodiment three
A kind of high-contrast LED of the present embodiment shows the manufacture method of module, the difference of itself and embodiment one is: as shown in Fig. 4 and Fig. 5 a, 5b, 5c, 5d, step S4 ' is after completing steps S1, completes before implementation step S2, after completing steps S2, cutting LED support, isolates at least one LED component.
In the present embodiment, as shown in figure 5 a and 5b, after step S1 completes, the LED support with at least one LED support unit 11 is produced; Spraying coating process is adopted to apply black material 3 to the reflector upper surface 122 of LED support unit each in LED support and reflector side 121.In other embodiments, spraying coating process can be adopted only to carry out black material coating to the reflector lateral side regions of LED support unit, as shown in Figure 6, black material 3 is applied to the side 121 of the reflector of LED support unit, and the upper surface of reflector does not apply black material, when the side of the reflector to LED support unit coating black material, the upper surface of reflector is blocked.
The high-contrast LED of the present embodiment shows the manufacture method of module, its advantage is, direct use spraying coating process completes the surface coating of LED support unit reflector, without the need to the reflector adopting black material to manufacture support, adopt ordinary white material, also can overcome the deficiency that conventional brush ink technique can not apply reflector side simultaneously, improve production efficiency, reduce production cost.
Embodiment four
The high-contrast LED of the present embodiment shows the manufacture method of module, the difference of itself and embodiment one is: as shown in Fig. 7 and Fig. 8 a, 8b, 8c, 8d, step 4 S4 ' ' is after completing steps S2, completes before implementation step S3, after completing steps S4 ' ', cutting LED support, isolates at least one LED component.
As shown in Figure 8 c, in the present embodiment, adopt spraying coating process, once in the reflector side 121 of LED support unit 11, reflector upper surface 122 and packing colloid 13 upper surface coating black material 3.After completing steps S4 ' ', cutting LED support unit 11, isolates at least one LED component 1.
The advantage of the present embodiment is, the black material coating to reflector side, reflector upper surface and packing colloid upper surface is completed once in packaged LED component, without the need to the reflector adopting black material to make LED support, also without the need to adopting black encapsulation colloid, good product consistency, production efficiency are high, cost is lower.
Below be only the preferred embodiment of the present invention, it should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. high-contrast LED shows a manufacture method for module, it is characterized in that, comprises the steps:
1) LED support with at least one LED support unit is made;
2) then encapsulate described LED support and form LED component;
3) again LED component is arranged in module main body;
Wherein, step 1) in the LED support that makes there is multiple LED support unit, and each LED support unit has reflector and adjacent LED support unit is connected by bonding jumper;
Step 4) be arranged on step 2) after, step 4) be specially: the upper surface spray black material of the packing colloid of spray black material simultaneously in reflector on the part or all of side of LED support unit reflector; Or the upper surface of packing colloid on the part or all of side of LED support unit reflector while of spray black material in reflector and the upper surface spray black material of reflector;
Or, step 4) be arranged on step 3) after, step 4) be specially: the upper surface spray black material being exposed to reflector side outside waterproof black glue and waterproof black glue in LED component, simultaneously the upper surface spray black material of packing colloid in the upper surface and reflector of LED component reflector;
Wherein, the thickness being sprayed on the black material on packing colloid is 8 μm ~ 12 μm.
2. high-contrast LED as claimed in claim 1 shows the manufacture method of module, it is characterized in that, step 2) be specially: in the reflector of LED support unit, LED chip is installed, and applies packing colloid, form described LED component.
3. high-contrast LED as claimed in claim 2 shows the manufacture method of module, it is characterized in that, step 3) be specially: LED component is arranged on the circuit board of module main body, between adjacent LED device, is filled with waterproof black glue.
4. high-contrast LED as claimed in claim 1 shows the manufacture method of module, and it is characterized in that, described black material is black ink or black paint.
5. high-contrast LED as claimed in claim 1 shows the manufacture method of module, it is characterized in that, step 4) be specially: before spraying, cover the non-spraying region of LED support unit, then to the region spray black material that need spray.
6. high-contrast LED shows a module, it is characterized in that, is obtained by the manufacture method described in any one of Claims 1 to 5.
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| CN201310113388.1A CN103165039B (en) | 2013-04-02 | 2013-04-02 | High-contrast light-emitting diode (LED) display module and production method thereof |
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| CN201310113388.1A CN103165039B (en) | 2013-04-02 | 2013-04-02 | High-contrast light-emitting diode (LED) display module and production method thereof |
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| CN103165039B true CN103165039B (en) | 2015-06-17 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104751746B (en) * | 2015-03-27 | 2018-02-23 | 深圳市联建光电股份有限公司 | LED lamp panel manufacturing process, LED lamp panel and the LED display of a kind of antiradar reflectivity |
| CN108258108B (en) * | 2016-12-27 | 2020-05-22 | 佛山市国星光电股份有限公司 | High-contrast LED support, manufacturing method thereof, LED device and LED display screen |
| CN107946292A (en) * | 2017-11-23 | 2018-04-20 | 深圳市晶台股份有限公司 | A kind of method for packing that LED display modules are realized by inkjet printing technology |
| CN110969957B (en) * | 2018-09-28 | 2022-02-18 | 深圳光峰科技股份有限公司 | LED display screen |
| JP6923820B2 (en) * | 2018-10-31 | 2021-08-25 | 日亜化学工業株式会社 | Manufacturing method of package and manufacturing method of light emitting device |
| CN109637383B (en) * | 2019-01-18 | 2022-01-14 | 深圳市洲明科技股份有限公司 | LED display module and processing technology and processing equipment thereof |
| CN110880497B (en) * | 2019-11-21 | 2024-01-26 | 东莞市中麒光电技术有限公司 | Small-spacing display screen and manufacturing method thereof |
| CN113497174B (en) * | 2020-03-20 | 2023-05-23 | 东莞市中麒光电技术有限公司 | Small-spacing LED display screen module and manufacturing method thereof |
| CN111261060B (en) * | 2020-03-20 | 2022-02-22 | 广州视源电子科技股份有限公司 | LED display screen and processing method thereof |
| WO2022233160A1 (en) * | 2021-05-07 | 2022-11-10 | 深圳市洲明科技股份有限公司 | Display screen module, and adhesive filling process and adhesive filling jig therefor |
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